REM Subgroup 5: Crust and Lithosphere

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This page provides introductions and links for maps and models of the crust and lithosphere.

Subgroup coordinator: Walter Mooney

ContributorsLinks
Ekström
Forsyth
Helmberger
Kind
Laske
CRUST1.0, A Global Crustal Model at 1x1 degrees
Global Digital Sediment Map
A Global Crustal Model at 2x2 degrees
CRUST 5.1 (IGPP site)
Levshin/Ritzwoller Eurasia regional model
Antarctica regional model
South America regional model
Masters A Global Heatflow Map
Mitchell Crustal/Upper Mantle Attenuation
Mooney web site: CRUST 5.1 (USGS site)
ftp site: CRUST 5.1
D. Müller Global Digital Age Map
Nataf 3SMAC
Sambridge RUM model
Sandwell Global Topography
Shearer

If you would like to contribute, please contact Guy Masters ( gmasters@ucsd.edu)

Assembled Data Sets and Models

This section summarizes the available data groups and models.

Crustal/Upper Mantle Models Models

This section summarizes global models of crustal parameters (e.g. crustal thickness, average velocities, density, sediment thickness) and provides links to the corresponding web pages.

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Age Maps, Topography/Bathymetry

This section provides links to age maps, continental and oceanic topography maps.

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Crustal/Upper Mantle Attenuation

This section is under construction. It will summarize subgroups of regional datasets and models of attenuation and provide the links to the corresponding web sites.

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Regional Surface Wave Studies

This section summarizes regional studies of surface waves. The data/models will be grouped by geographic region, as they become available on the world wide web.

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Regional Teleseismic Studies

This section is currently under construction. Its purpose will be to summarize results from regional teleseismic studies and provide the links to corresponding web pages as they become available. The data/models will be grouped by geographic region.

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Mantle Discontinuities

This section is currently under construction. Its purpose will be to summarize results from studies on mantle discontinuities and provide the links to corresponding web pages as they become available. The data/models will be grouped by depth.

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Anisotropy

This section is currently under construction. Its purpose will be to summarize results from studies on transverse and azimuthal anisotropy.

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Crust 2.0: A Global Crustal Model at 2 x 2
(Laske, Masters, Reif)

CRUST 2.0 is a global crustal model that specifies density, compressional and shear velocity on a 2x2 grid. It is an updated version of CRUST 5.1. A total of 341 different crustal profiles describe the variations in the 16200 cells of the 2x2 grid.

Types Thickness Sediment Thickness README

Description of the model.
The model and fortran routines to read the model are available on our anonymous ftp site.
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Crust 5.1: A Global Crustal Model at 5 x 5 (Mooney, Laske, Masters)

CRUST 5.1 is a global crustal model that specifies density, compressional and shear velocity on a 5x5 grid. A total of 149 different crustal profiles describe the variations in the 2952 cells of the 5x5 grid.

Types Thickness Sediment Thickness README

Descriptions of the model are available at both the
IGPP and the USGS site. The model and fortran routines to read the model are available on our anonymous ftp site.
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3SMAC (Nataf and Ricard)

An a priori seismological model of the upper mantle based on geophysical modeling. Data are available on a 2x2 grid. A short description can be found in the
REM abstract. The compressed tar file (available via anonymous ftp) includes the model and programs to read and plot it.

click on the plot for a quick comparison of crustal thicknesses of 3SMAC with that of CRUST 5.0, the 1996 version of CRUST 5.1 ([Olivier Fehrenbach, 1996]).

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RUM: Regionalized Upper Mantle (Gudmundsson and Sambridge)

This section provides a link to the RUM model. RUM is a three-dimensional model of seismic structure which is described by only 90 parameters. This is achieved by irregularly sampling a detailed regionalization of the globel, by detailed mapping of subducted lithosphere in the mantle as defined by seismicity.

click here for a quick view of the regionalization used.
The link to the
RUM web site provides the model and a detailed description.

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A Global Digital Maps of Sediment Thickness (Laske and Masters)

This section provides a link to a Global Digital Sediment Maps. This map is compiled on a 1x1 grid. Provided are the thickness map and elastic parameters (density, seismic velocities) with the same grid spacing.

click here for a quick view.
The link to the
Global Digital Sediment Map web site provides the model and a detailed description.

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Travel Time Subgroup 1 (e.g. P times)

This section will provide diagrams, tables and links to P travel time data of various workers.

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  • waveform group 1

    Waveform Subgroup 1

    This section will provide a description and links to waveforms of type 1 (e.g. S waveforms).

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  • waveform group 2

    Waveform Subgroup 2

    This section will provide a description and links to waveforms of type 2 (e.g. P waveforms).

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    Dispersion Data 1

    This section will provide a description and links for dispersion data of type 1 (e.g. region 1).

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    Dispersion Data 2

    This section will provide a description and links for dispersion data of type 2 (e.g. region 2).

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    Model Group 1

    This section will provide a description and links for regional models of type 1 (e.g. region 1).

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    Model Group 2

    This section will provide a description and links for regional models of type 2 (e.g. region 2).

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    Gabi Laske ( glaske@ucsd.edu)